(19)
(11) EP 1 470 796 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
22.06.2005 Bulletin 2005/25

(43) Date of publication A2:
27.10.2004 Bulletin 2004/44

(21) Application number: 04009165.4

(22) Date of filing: 16.04.2004
(51) International Patent Classification (IPC)7: A61F 2/06
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
Designated Extension States:
AL HR LT LV MK

(30) Priority: 22.04.2003 US 421054

(71) Applicant: Medtronic Vascular, Inc.
Santa Rosa, CA 95403 (US)

(72) Inventors:
  • Goodson IV, Harry, B.
    Fremont California 94538 (US)
  • Greenan, Trevor
    Miami Florida 33133 (US)

(74) Representative: Zimmermann, Gerd Heinrich et al
Zimmermann & Partner, P.O. Box 33 09 20
80069 München
80069 München (DE)

   


(54) Single-piece crown stent


(57) A stent (100) for a stent-graft (200) includes: a first ring (102); a second ring (104); and spring elements (106) coupling the first ring (102) to the second ring (104), wherein the first ring (102), the second ring (104) and the spring elements (106) are integral. During maneuvering of the stent-graft (200) through the tortuous human anatomy, the first ring (102) is bent or flexed relative to the second ring (104). However, the spring elements (106) are distorted to accommodate this bending. Further, since the stent (100) is integral, a graft material (202) only has to be sewn to the second ring (202) minimizing the delivery profile of the stent-graft (200).






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